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Air impulse - dispensing device for a tonometer from the non-contact type and a tonometer from the non-contact type
Air impulse - dispensing device for a tonometer from the non-contact type and a tonometer from the non-contact type
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机译：空气脉冲-非接触式眼压计的分配装置和非接触式眼压计的分配装置
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摘要
An air pulse has - dispensing device for a tonometer from the non-contact type contains: a cylinder (4); a piston (5), which - and forth, in the cylinder is arranged and the air in a compression space (6) is compressed; a nozzle (12), which the compressed air to form a tested eye (1) outputs toward; at least one opening (16), which is provided in the piston and the the compression space with a cylinder chamber (15) for the release to the atmospheric air; and a valve disk (17) on the piston is provided, and the at least one opening opens and closes, wherein the valve disk the at least one opening on the basis of a differential pressure between the compression space and the cylinder chamber for the release to the atmospheric air, when the piston in a direction to the compression of the air is driven in the compression space, and the at least one opening on the basis of the differential pressure opens when the piston in a direction opposite to the direction of the compression of the air is driven in the compression space.
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